Our custom fluorescent antibody and protein labeling service combines years of conjugation expertise with a wide selection of labels, including fluorescent dyes, phycobiliproteins, and enzymes, along with a choice of labeling chemistries. We provide conjugation services for both research and commercial use.

Choose your labeling chemistry

Amine labeling—the most common form of labeling; amine reactive dyes are regularly used to label antibodies and other proteins for use in immunochemistry and immunoassays

Thiol labeling—this is another option for labeling your protein of interest, if free thiols are present. Depending on the protein, labeling via thiol group may be useful for site specific labeling.

SiteClick™ labeling—labeling using click chemistry can introduce the label via sugars found associated with the Fc region of many antibodies

Other labeling methods—we also perform labeling utilizing other reactive chemistries, such as labeling a carboxylate and aldehyde groups, or introduce a label using crosslinking chemistries

Choose your label

We can conjugate your antibody or protein to:

Alexa Fluor® dyes—for superior fluorescence performance across and beyond the visible spectrum, these dyes can be attached to antibodies and proteins without significant self-quenching, leading to brighter conjugates

If you don’t see the label you are interested in, just ask—in most cases, we can accommodate your request.

Other bio-conjugation services

Custom Zenon® labeling—Zenon® labeling technology allows for rapid non-covalent antibody labeling. If you can’t find the Zenon® labeling reagent you need, let us make one for you, with our custom labeling services. Download the custom labeling services quote form, complete, and email to the address on the form.

Biopolymer labeling—we can also label certain biopolymers, such as dextrans, with many of the labels listed in the above section.